o  To use the RMU Checkpoint command for a database, you must
       have the RMU$BACKUP or RMU$OPEN privilege in the root file
       access control list (ACL) for the database or you must have
       the OpenVMS WORLD privilege.

    o  The RMU Checkpoint command is useful only if the database fast
       commit feature has been enabled. If the fast commit feature is
       disabled, this command does nothing.

       For more information on the fast commit feature, see the FAST
       COMMIT IS ENABLED section of the SQL ALTER DATABASE statement
       in the Oracle Rdb SQL Reference Manual.